live your life big. burn the candle large. it's not a sensationalistic statement to say the sharks here are dangerous. they are aggressive, they are curious, and they for thousands of years have heard a fluttering on the surface to mean to them, dinner bell. it's going to be at daunting task. i feel confident. on the other hand, i'll admit to you, i feel afraid. when i tried to swim before in 1978, i was 28 years old. i didn't have as much fat on the body. on the other hand, at this age, i do feel a little more bullish. so, i think in an emotional mental sort of stance, i'm at an athletic prime at even just one month shy of 62. so, when i go to sleep at night, i say, how much more could i put into this day? nothing. that's the way i want to live. >> diana nyad, in training now. she should launch in another couple of weeks. we'll let yoyoknow when. >>> thank you for watching. we're always on at abcnews.com. "nightline" later. and we will see you here tomorrow night. >>> tonight the brutal murder of an off duty sheriff deputy. w